using System;

namespace AgileCode
{
    public class Keyboard
    {
        public static char Read()
        {
            return Console.ReadKey().KeyChar;
        }
    }

    public class Printer
    {
        public static void Write(char c)
        {
            Console.Write(c);
        }
    }

    public class PaperTape
    {
        public static char Read()
        {
            return Char.ToUpper(Console.ReadKey().KeyChar);
        }

        public static void Punch(char c)
        {
            Console.Write("::" + c);
        }
    }
}